BBC NEWS: "The world's smallest radio frequency identification tags have been unveiled by Japanese electronics firm Hitachi. The minute devices measure just 0.05mm by 0.05mm (0.002x0.002in) and to the naked eye look like spots of powder. They are thin enough to be embedded in a sheet of paper, Hitachi spokesman Masayuki Takeuchi says."
See some potential for ubiquitous computing?
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